Abstract

A novel technique for characterization of the second-order nonlinearity in nonlinear crystals is presented. It utilizes group-velocity walk-off between femtosecond pulses in type II SHG to achieve three-dimensional resolution of the nonlinearity. The longitudinal and transversal spatial resolution can be set independently. The technique is especially useful for characterizing quasi-phase-matched nonlinear crystals, and it is demonstrated in potassium titanyl phosphate.

© 2003 Optical Society of America

Simultaneous second-harmonic generation with two orthogonal polarization states in periodically poled KTP

V. Pasiskevicius, S. J. Holmgren, S. Wang, and F. Laurell
Opt. Lett. 27(18) 1628-1630 (2002)

First-order type II quasi-phase-matched UV generation in periodically poled KTP

S. Wang, V. Pasiskevicius, J. Hellström, F. Laurell, and H. Karlsson
Opt. Lett. 24(14) 978-980 (1999)

Quadratic spatial solitons in periodically poled KTiOPO₄

Hongki Kim, Ladislav Jankovic, George Stegeman, Silvia Carrasco, Lluis Torner, David Eger, and Mordechai Katz
Opt. Lett. 28(8) 640-642 (2003)

Highly efficient blue-light generation from a compact, diode-pumped femtosecond laser by use of a periodically poled KTP waveguide crystal

B. Agate, E. U. Rafailov, W. Sibbett, S. M. Saltiel, P. Battle, T. Fry, and E. Noonan
Opt. Lett. 28(20) 1963-1965 (2003)

Ultraviolet generation by first-order frequency doubling in periodically poled KTiOPO₄

S. Wang, V. Pasiskevicius, F. Laurell, and H. Karlsson
Opt. Lett. 23(24) 1883-1885 (1998)